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Mercedes joins Williams and RB with 'quick and cheap' F1 cockpit airflow upgrades

While teams are often reluctant to introduce major development packages for sprint race weekends, because of limited track running, it does not prevent them seeking gains in other ways.

And interestingly, in the team submissions lodged with the FIA for this weekend's race in Shanghai, three outfits have made revisions to the area surrounding the driver and cockpit area.

RB F1 Team VCARB 01 halo detail (Photo by: Jon Noble)

At RB, it has reshaped the headrest behind the drivers’ helmet to help better manage the airflow separation in this area, which should have benefits further downstream.

At Mercedes and Williams, the changes have come to the halo area, which is also aimed at cleaning up airflow.

Mercedes F1 W15 halo detail (Photo by: Jon Noble)

Mercedes has added a small flick either side of the cockpit behind the Halo.

The idea is that these tweaks help generate small vortices to help control flow out of the cockpit, which then sets the air up much better as it heads towards the rear wing.

Williams FW46 halo detail (Photo by: Jon Noble)

For Williams, the geometry at the forward part of the halo has been adjusted to increase the angle of attack.

This helps tidy up the airflow around the halo and better controls losses that it has noticed within the cockpit area.

The benefits of doing so should be in improving the airflow to the rear and beam wing, which then boosts aerodynamic efficiency.

Williams head of vehicle performance Dave Robson said that while the changes seemed relatively minor in the grand scheme of things, the cockpit area was quite critical in terms of distributing airflow better around the rest of the car.

That is why he reckoned it was intriguing that other teams had also introduced changes here on the same weekend.

“It is an important area,” he said. “I saw that [FIA submission] list this morning and I was quite surprised by the coincidence of it.

“But in our case, we did some flow vis on our Halo shroud a couple of races ago and saw a few aspects of the flow we didn't like. That is what inspired us to improve the flow, take the cockpit losses and just make sure they end up in the right part at the back of the car.”

Robson felt that there were two critical factors at play with teams bringing upgrades in this area: it showed that details mattered more, and they were also something that could be done cheaply and quickly.

“It is just one of those incremental changes that you need to make,” he said. “And hopefully it will be more effective than it would visibly appear to be.

“But the other thing is it's relatively quick to do. So, we're in that sort of phase where we've brought the [updated] front wing to Japan, which is quite a lot of work and a big thing to introduce, and we're kind of working on the next package of aero upgrades.

“So, something like that Halo shroud is relatively small that we can fit in quite cheaply.”

Watch: F1 Teams Concerns about the 2026 Regulations Changes

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